CONTINUOUS INTERNET TELEMETRY24H DRIFT8,763 material changesacross 8,372 domains · 24h to ~2h ago · -32,097 vs yesterdayNOW563 curated domains not reachablelast probe, steadySITE ERRORS34,264 sites serving errorslast probe · 5xx / 404 / TLSBOT DEFENSEbot defense observed on 156,299 sites429 rate-limit / 403 bot-block, a posture signalMOVERokta.comNo mail routes in the latest observation

zima-engineering.cz

Observed Jul 26, 2026, 22:31 UTC (7d ago). Every field below was attested with an Ed25519 signature at scan time. Catalog observation, re-checked on rotation - watch it for 5-minute checks.

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Up right now
Secured byLet's Encrypt
IPv6 · 1 subdomain · domcop
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat zima-engineering.cz actually stands on - every host below is a signed observation
zima-engineering.cz
A / AAAA
37.205.15.1962a03:3b40:fe:7f1::1
2a03serves the site
NS
ns.web4u.czns2.web4u.cz
web4u.czanswers its DNS
MX
mail.zima-engineering.cz
zima-engineering.czreceives its email
TLS
zima-engineering.cz
Let's Encryptissued its certificate

DNS Records

A 1

  • 37.205.15.196

AAAA 1

  • 2a03:3b40:fe:7f1::1

MX 1

  • 10mail.zima-engineering.cz

TXT 5

  • v=spf1 a:mail.zima-engineering.cz -all
  • v=DMARC1; p=none
  • v=spf1 a:mail.zima-engineering.cz -all
  • v=spf1 a:mail.zima-engineering.cz -all
  • v=spf1 a:mail.zima-engineering.cz -all

NS 2

  • ns.web4u.cz
  • ns2.web4u.cz

SOA 1

  • ns.web4u.cz admin.web4u.cz

TLS Certificates (4)

Common NameIssuerExpires
zima-engineering.cz C=US, O=Let's Encrypt, CN=YE2 Tue, 01 Sep 2026 15:17:23 +0000
YE2 C=US, O=ISRG, CN=Root YE Sat, 02 Sep 2028 23:59:59 +0000
Root YE C=US, O=Internet Security Research Group, CN=ISRG Root X2 Thu, 02 Sep 2032 23:59:59 +0000
ISRG Root X2 C=US, O=Internet Security Research Group, CN=ISRG Root X1 Thu, 02 Sep 2032 23:59:59 +0000

Subdomains (1)

The proof

Signed at scan time. Check the math yourself. Every line above is part of one signed observation. Re-hash it and check the Ed25519 signature in your own browser; nothing leaves your machine.

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Ed25519 Receipt

Receipt ID
rcpt_140477285322e245
Output Hash
7c93efc903e2436807a909449a3e2149f6c118640c41801940ff2ab402e282bf
Signature
ed25519:f111a833b392b49ab3ed4da428a42d764469d90e93c318ef1f9cbaa48b08c0bbbde5d4044e15ad290a4e8b9f67abb0969950649b311d188d68a9570e9e19880c
Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent
(genesis)
Plane
fast
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